Wallets: add custom invoice expiry (#1396)

* expiry for fakewallet

* expiry for lnd

* lnbits backend

* fix: eclair descriptionHash fixed and expiry added

* cln and sparko

* test expiry

* Eclair from AdminUI and bugfix for nonexistent payments

* add to settings and .env and remove lntxbot

* remove duplicate and format

* add invoice expiry

* add min max and step

* UI works now

* test should fail, sanity check, will revert

* revert, ready for merge

Co-authored-by: Tiago Vasconcelos <talvasconcelos@gmail.com>

lnbits/wallets/lndgrpc.py

@@ -154,8 +154,11 @@ class LndWallet(Wallet):
         memo: Optional[str] = None,
         description_hash: Optional[bytes] = None,
         unhashed_description: Optional[bytes] = None,
+        **kwargs,
     ) -> InvoiceResponse:
-        params: Dict = {"value": amount, "expiry": 600, "private": True}
+        params: Dict = {"value": amount, "private": True}
+        if kwargs.get("expiry"):
+            params["expiry"] = kwargs["expiry"]
         if description_hash:
             params["description_hash"] = description_hash
         elif unhashed_description: